.imageBtn {
    -fx-alignment: center;
    -fx-padding: 8;
    -fx-spacing: 4;
    base-color: #f0f0f0;
    -fx-background-color: base-color;
    -fx-font-family: 'Microsoft YaHei';
    -fx-font-size: 15;
}
.imageBtn:hover {
    -fx-background-color: #e0e0e0;
}
.navBtn{
    -fx-spacing:5;
    -fx-padding: 5 5 5 5;
    -fx-background-color: #fff;
}
